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Tate Arithmometer

L.E. Jones

The instrument consists of a rectangular wooden box with metal reinforced corners and two metal handles on each side. The box has a lock on the front. The lid is hinged at the back. Directions are pasted to the inside of the lid. The box houses a calculating device actuated by a crank.  The instrument features a brass faceplate with dials and a numerical display. Two others levers /switches made of wood and metal are also attached to the metal face. The metal face opens to reveal a system of gears. Interior metal components are well greased. To the left of the calculating machine is drawer containing loose components, including the key to the box, wooden and metal components such as an extra crank, a small brush, and a small grey metal digital calculator

Accession Number: 2010.lej.47

Alternative Name:

Primary Materials: Brass, Wood


Inside of lid: “Directions…” on face of metal calculating machine: “Tates Patent Arithmomenter, C & E Layton, London” Black lever on the face plate: “ADD/MULT., SUB. DIV.”

Dimensions (cm):

Closed Box: Height = 16, Width = 19, Length = 8.5.


This device performs arithmetic calculations: addition, subtraction, multiplication, division.


Good: Scratches throughout, especially on exterior of box, particularly on the lid. Some tarnishing of exterior metal components. Oil still present on the cogs/interior of calculating machine, lid cracked, some oxidization on exterior handles and calucating machine face, and some tarnishing of face of calculating machine. Wear on caluclating machine exterior surface around adjustable components. Some tarnishing of loose metal components. Paper label tearing at bottom.

Associated Instruments:

Manufacturer: C & E Layton, London

Date of Manufacture: c. 1887-1915


Acquired March 2005 from Fred DeLory, Civil Engineering.

Additional Information and References:

Historical Notes:


  • Donated to UTSIC